Enable the module, as well as debugging. To test in sandbox insert ‘test’ in the ‘server’ field and use the following credentials: Merchant ID: 10000100 Merchant Key: 46f0cd694581a Leave the passphrase blank and setup the other options as required

Click ‘Save Config’, you are now ready to test in sandbox, click ‘Save Config’.

Once you are ready to go live, insert ‘live’ into the ‘server’ field and input your PayFast credentials. Set debug log to ‘No’, and the other options as required.

Click ‘Save Config’, you are now ready to process live transactions via PayFast.